Miller Fisher Syndrome in the COVID-19 Era - A Novel Target Antigen Calls for Novel Treatment.

Although Miller Fisher syndrome cases have been published in this coronavirus disease 2019 (COVID-19) pandemic, anti-GQ1b antibody has not been identified so far. A direct proof of association is not yet available since the exact pathophysiology is not known. Using a proof of contradiction argument, lack of GQ1b serves as the indirect proof that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is probably the infection preceding demyelination. A novel antigen has yet to be described.